First, some context.
I urged the AltConf organizers to publish a Code of Conduct for their attendees and speakers. In that Twitter conversation, I repeatedly cited Ashe Dryden's Code of Conduct 101 + FAQ.
This is what they published on their website as their code of conduct (as of 2014-05-06):
AltConf is provided free of charge, on a first-come, first-served basis, without warranty or liability, by volunteers, for the good of our community.
To participate in our conference in any way (attendee, speaker, sponsor, etc), you must agree to abide by the instructions of the volunteers and the decisions of the organizers, and acknowledge that you may be barred from participation at any time, for any reason.